JPH1094683A - Cutter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make a great contribution to making a good use of resources to let a cutter remarkably contribute to the effective utilization of resources by making a cutter blade easily replaceable by composing this cutter of a lying body provided so as to elastically lie successively to a fitting body attachable and detachable to a main body, blade body to be protruded from the main body by laying the lying body, and operating body for laying the lying body. SOLUTION: When a main body 2 is moved forward with power more than hooking based on a holding means while holding the main body 2 with a right hand and placing the forefinger along the operating element of an operating body 6, for example, the frame piece of a lying body 4 is elastically laid by the wedge operation of a wedge piece at the operating body 6, and a blade tip 31 of a blade body 5 is protruded downward from an opening 10 at the main body 2 and turned to a protruded state. At such a time, since one part of a recessed hook part at a holding means 39 and a projecting hook part are engaged by elasticity at one part of neck element and leg element of the operating body 6, even when the forefinger is detached from the operating element of the operating body 6, the operating body 6 and the lying body 4 are held in the same state. When the main body 2 is held and moved backward in such a state while setting its lower face along the upper face of an object to be cut, the object to be cut can be cut.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a cutting tool commonly referred to as a single cutter used for cutting an object to be cut, such as paper having a predetermined number or a predetermined thickness.

[0002]

2. Description of the Related Art Conventionally, as this kind of cutting tool, for example, a cutting tool described in Japanese Utility Model Laid-Open Publication No. Sho 60-179280 is known. Basically, this includes a main body, an elevating body pivotally mounted on the main body, a fixing means for fixing the elevating body to the main body at a predetermined position, and an elevating body fixed to the elevating body. And a blade body that can protrude from the main body. In such a device, when the elevating body is raised with respect to the main body and the elevating body is fixed at a predetermined position by the fixing means, the blade body is projected from the main body by a predetermined amount. Therefore,
The object to be cut having a predetermined number and a predetermined thickness can be cut by the blade body protruded by a predetermined amount.

[0003]

However, since the blade is fixed to the elevating body, it cannot be easily replaced even if the blade becomes dull. SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has been made in order to solve the problem. An object of the present invention is to provide a cutting tool that allows a blade body to be easily replaced.

[0004]

A cutting tool according to the present invention basically comprises a main body, a mounting member detachably provided on the main body, and a lowering body connected to the mounting body so as to be elastically lowerable. The present invention is characterized in that it comprises a blade body detachably provided on the elevating body and protruding from the main body depending on the elevating body, and an operating body provided on the main body and elevating the elevating body.

When the operating body is operated, the elevating body is elastically raised with respect to the mounting body mounted on the main body, and the blade body protrudes from the main body by a predetermined amount. Then, when the main body is gripped and moved in the cutting direction while abutting on the object to be cut in the same state, the object to be cut is cut by the blade body. The protruding amount of the blade body can be changed by operating the operating body, and can be made to correspond to the number and thickness of the object to be cut. When replacing the blade body due to poor sharpness, remove the body consisting of the mounting body, the elevating body and the blade body from the body, remove the blade body from the removed body, and then Is replaced with a new one and assembled in the reverse order of the above-mentioned disassembly. Since the blade body is replaceable, a good cutting operation can always be performed.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a longitudinal sectional side view showing a cutting tool of the present invention. FIG. 2 is a view similar to FIG. 1 showing a cut state. FIG. 3 is a 3-3 cross-sectional plan view of FIG. 1. FIG. 4 is a side view showing a state in which a body including a blade body, a mounting body, and a lifting body is detached from a main body. FIG. 5 is an exploded perspective view.

The main part of the cutting tool 1 is composed of a main body 2, a mounting body 3, an elevating body 4, a blade body 5, and an operating body 6.

The main body 2 forms a basic portion of the cutting tool 1. In this example, the main body 2 is sized to fit in the palm, has a substantially semi-disc shape, and is made of synthetic resin. The main body 2 includes a front and back wall (left and right side walls) 7 having a flat lower surface and a substantially semi-disc shape, a peripheral wall 8 connecting these circumferences, an accommodation cavity 9 formed therein by these, and An opening 10 formed by opening downward, an insertion hole 11 formed on the rear upper side of the peripheral wall 8,
A guide hole 12 formed on the rear upper side of the front wall 7; a hook hole 13 formed on the rear upper side of the back wall 7; a window hole 14 formed on the front upper side of the peripheral wall 8; 7 comprises a through-hole 15 drilled at the lower rear side for passing a string or the like, and a base mark 16 formed at the lower front front of the front and back walls 7 to indicate the position of the cutting edge of the blade body 5. . The lower surface of the front and back walls 7 of the main body 2 is in sliding contact with the upper surface of the cut object A such as paper.

The mounting body 3 is provided on the main body 2 so as to be detachable, and in this example, has a substantially Y-shape and is made of synthetic resin. The attachment body 3 has a substantially Y-shaped insertion piece 17 inserted from the insertion hole 11 of the main body 2 into the accommodation cavity 9, and is connected to the front side of the insertion piece 17 and slidably fitted into the guide hole 12 of the main body 2. Oval operation piece 18, anti-slip projections 19 provided on the front side of the operation piece 18, and hemispherical projections projecting from the rear side of the insertion piece 17 and capable of engaging with the engagement holes 11 of the main body 2. 20.

The elevating body 4 is connected to the mounting body 3 so as to be able to elastically elevate. In this example, the elevating body 4 has a substantially horizontal U-shape, is made of synthetic resin, and is provided integrally with the mounting body 3. Have been. The elevating body 4 has a substantially horizontal U-shaped frame piece 21 having both free ends integrally connected to the front side of the mounting body 3 so as to be elastically elevable and capable of abutting on the upper and lower sides and the front oblique side of the blade body 5. A receiving piece 22 attached to the inside thereof and capable of abutting against the back surface of the blade body 5; a receiving portion 23 formed by these to receive the blade body 5 from the front side; And an insertion hole 24 formed at the front lower side of the receiving piece 22 to insert the cutting edge portion of the blade body 5, and provided in the rear inside of the frame piece 21 so as to be capable of elastically tilting forward and backward, and at the rear oblique side of the blade body 5. A resilient piece 25 that abuts and thereafter prevents movement, a semicircular claw piece 26 that is provided at the free end of the resilient piece and abuts against the surface of the blade body 5 to prevent its movement in the front side direction; A projecting portion 27 provided on the front upper side of 21 and a guide piece 28 provided elastically deformable by connecting the frame body 21 and the lower front side of the mounting body 3 to each other.
And consists of The guide piece 28 serves as a guide when the mounting body 3 and the elevating body 4 are inserted from the insertion hole 11 of the main body 2 into the accommodation cavity 9, and also serves to enhance the elastic elevating force of the elevating body 4 with respect to the mounting body 3. Fulfill.

The blade body 5 is detachably provided on the elevating body 4 and can protrude from the main body 2 by elevating the elevating body 4.
In this example, it has a parallelogram plate shape, is made of stainless steel, and has a single-edged shape. The blade body 5 includes a circular connection hole 29 formed on the rear side and a blade 30 formed on the lower side.
And a cutting edge 31 formed at a corner between the lower side and the front oblique side.

The operating body 6 is provided on the main body 2 and
In this example, it has a substantially geometric shape and is made of synthetic resin. The operation body 6 includes a rectangular plate-shaped operation piece 32 located outside the main body 2 and a front and rear neck piece 33 extending downward from the lower side thereof and positioned in the window hole 14 of the main body 2.
The front and rear leg pieces (the front leg pieces are long and the rear leg pieces are short) 34 that extend from the lower side to the front and rear sides and are located in the accommodation cavity 9 of the main body 2, and are provided on the front half upper side of the front leg pieces 34. A plurality of incisions 35 cut at intervals to allow the same portion to bend.
And a wedge piece 36 which is connected to the lower front half of the front leg piece 34 and becomes thinner toward the front side and can be fitted to the projection 27 of the elevating body 4.
And a front and rear through hole 37 formed so as to straddle the neck piece 33 and a part of the leg piece 34 so that the part can be elastically deformed in the left-right direction. The left and right retaining projections 38 are engaged with the peripheral wall 8 after being inserted through the second window hole 14. The operating body 6 lowers the elevating body 4 using the wedge action of the wedge piece 36.

Thus, a holding means 39 is provided between the main body 2 and the operating body 6. The holding means 39 includes the main body 2
To hold the elevating body 4 at a predetermined elevating position,
In this example, the elevating body 4 is held at a predetermined elevating position by holding the operating body 6 at a predetermined position with respect to the main body 2. And a plurality of serrated recesses 40 having a triangular cross-section, which are protruded on the front side of the neck piece 33 located on the front side of the operating body 6 and can be engaged with one of the recesses 40. Hook 41
And consists of

The operating body 6 is forcibly inserted into the receiving cavity 9 through the window hole 14 of the main body 2, first of all, the front leg piece 34 and then the rear leg piece 34. At this time, the leg pieces 34 before and after the operating body 6 can bend the neck piece 33 with respect to the operating piece 32 and the front leg pieces 34 can be deformed by the cut grooves 35. Curved along. When the retaining projection 38 of the operation body 6 passes through the window hole 14 of the main body 2, the neck piece 33
And a part of the leg piece 34 is narrowly deformed in the left-right direction, so that this can be easily performed, and after passing, the part is restored, so that it is engaged with the inner surface of the peripheral wall 8 of the main body 2 so as to be a so-called stopper. .

Next, the operation will be described based on such a configuration. FIG. 1 shows a housing state in which the blade body 5 is housed in the housing cavity 9 without protruding from the opening 10 of the main body 2.

In such a state, for example, the main body 2 is gripped by the right hand, and the forefinger of the main body 2 is brought into contact with the operation piece 32 of the operation body 6 and moved forward by a force larger than the engagement by the holding means 39. As shown in FIG. 2, the frame piece 21 of the elevating body 4 is elastically lowered by the wedge action of the wedge piece 36 of the operating body 6, and the cutting edge 31 of the blade body 5 projects downward from the opening 10 of the main body 2. It becomes a protruding state. At this time, one portion of the retaining concave portion 40 of the holding means 39 and the retaining convex portion 41 are connected to the neck piece 33 and the leg piece 34 of the operating body 6.
Is held by the elasticity of a part of the operating body 6, even if the index finger is released from the operating piece 32 of the operating body 6, the operating body 6 and the elevating body 4 are held in the same state.

When the main body 2 is gripped in such a state and its lower surface is moved rearward (in the cutting direction) while contacting the lower surface with the upper surface of the object A, the object A is cut. If the amount of movement of the operation body 6 is adjusted, the amount of elevation of the elevating body 4 changes,
The protrusion amount of the blade body 5 changes. Therefore, as shown in FIG. 2, for example, when the amount of protrusion of the blade body 5 is made to correspond to the thickness of the single object A, only this can be cut.

When the blade body 5 becomes poorly sharpened and needs to be replaced, the following procedure is performed. First, the operation piece 1 of the mounting body 3
8. Touch the thumb or the like to 8 and move it backward. Then, the engagement between the engaging hole 13 of the main body 2 and the engaging protrusion 20 of the attaching body 3 is released, and as shown in FIG.
And the blade body 5 are removed from the insertion hole 11 of the main body 2. Next, the bullet 2 of the elevating body 4 of the detached one
The blade 5 is tilted backward, and the rear side of the blade body 5 is moved in the front side direction to release the engagement of the elastic pieces 25 and the claw pieces 26 of the elevating body 4 with the blade body 5. After the release, the bullet 25 of the elevating body 4 may be returned to its original state. In this case, the bullet 25 and the claw 2 of the elevating body 4
6 is located on the back side of the blade body 5. When the rear side of the blade body 5 is pinched and moved to the front side rearward, the blade tip 31 portion of the blade body 5 comes out of the insertion hole 24 of the elevating body 4 and the blade body 31 is removed from the accommodation portion 23 of the elevating body 4. 5 is disengaged (see FIG. 5). Thereafter, the blade body 5 is replaced with a new one, and the blade body 5 is assembled in the reverse order of the above-described disassembly.

Since the mounting body 3 is detachably provided on the main body 2 and the elevating body 4 is connected to the mounting body 3 so as to be able to elastically elevate, and the blade body 5 is provided on the elevating body 4 so as to be detachable. If the sharpness of the body 5 deteriorates, the blade body 5 can be easily replaced. Therefore, a good cutting operation can always be performed.

Since the blade body 5 can be easily exchanged, it can be exchanged for the same kind or different kind, so that the work efficiency is improved and the work range is expanded.

Since the body consisting of the mounting body 3, the elevating body 4 and the blade body 5 is provided detachably with respect to the main body 2,
It can be removed from the main body 2 and used as a small knife. In this case, since the blade body 5 can be replaced, a small knife of a replaceable blade type can be obtained.

Since the elevating body 4 is connected to the mounting body 3 so as to be able to elastically elevate, the elevating body 4 is connected separately and pivotally connected, and there is no need to interpose an elastic body between them. Significant simplification can be achieved and cost can be reduced.

When the blade 5 is not cut, the housing 9 of the main body 2 is not cut.
Since it can be stored in the main body 2 so as not to protrude from the main body 2, there is no fear of inadvertent contact and injury, and it is extremely safe.

The elevating body 4 has an insertion hole 24 through which the cutting edge 31 portion of the blade body 5 is inserted, a housing portion 23 for housing the remaining blade body 5 portion, and prevents movement of the blade body 5 in the rear and front directions. Since the blade 25 and the claw 26 are provided, the blade 5 can be attached and detached without largely moving backward.

The holding means 39 is extremely rational because it utilizes the elasticity of a part of the neck piece 33 and the leg piece 34 of the operating body 6.

In the above example, the blade body 5 is a single blade type. However, the present invention is not limited to this. For example, a double blade type in which the blades 30 are formed on the upper and lower sides may be used. In this case, since two cutting edges 31 are formed, they can be used twice.

In the above example, the operating body 6 is moved in the front-rear direction with respect to the main body 2 using the wedge action, so that the elevating body 4 is moved.
However, the present invention is not limited to this. For example, the elevating body 4 may be elevated by rotating about a horizontal axis with respect to the main body 2 using a cam action, or a screw action may be used. The elevating body 4 is screwed up and down with respect to the main body 2
May be raised.

The holding means 39 is provided between the main body 2 and the operating body 6 in the above example, but is not limited to this. For example, as shown in FIG. May be provided.
That is, a plurality of serrations 40 are formed on the lower surface of the wedge piece 36 of the operating body 6, and the protrusions 27 of the elevating body 4 engage with one of the locking recesses 40. You may do it.

[0029]

As described above, according to the present invention, as described above,
The following excellent effects can be obtained. (1) Consisting of a main body, a mounting body, an elevating body, a blade body, and an operating body.
Since the elevating body is connected to the mounting body so as to be elastically elevable and the blade body is detachably provided on the elevating body, the blade body can be easily replaced. (2) Since the blade body can be easily replaced, there is no need to dispose the entire cutting tool depending on the life of the blade body as in the conventional case.
It can greatly contribute to the utilization of resources.

[Brief description of the drawings]

FIG. 1 is a vertical side view showing a cutting tool of the present invention.

FIG. 2 is a view similar to FIG. 1, showing a cut state.

FIG. 3 is a cross-sectional plan view taken along line 3-3 in FIG. 1;

FIG. 4 is a side view showing a state in which a blade body, a mounting body, and an elevating body are detached from a main body.

FIG. 5 is an exploded perspective view.

FIG. 6 is a view similar to FIG. 1, showing another example of the holding means.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Cutting tool, 2 ... Body, 3 ... Mounting body, 4 ... Elevating body, 5 ...
Blade body, 6 operation body, 7 front and back wall, 8 peripheral wall, 9 accommodation cavity, 10 opening, 11 insertion hole, 12 guide hole, 13
Hook hole, 14: window hole, 15: through hole, 16: base mark, 17 ...
Insertion piece, 18 ... Operation piece, 19 ... Slip unevenness, 20 ... Hanging projection, 21 ... Frame piece, 22 ... Receiving piece, 23 ... Accommodating part, 24 ... Insertion hole, 25 ... Elastic piece, 26 ... Claw piece, 27 ... Projection, 28 ... Guide piece, 29 ... Connection hole, 30 ... Blade, 31 ... Blade tip, 32 ... Operation piece, 33 ... Neck piece, 34 ... Leg piece, 35 ... Cut groove, 36 ... Wedge piece, 37 ... Hole 38, retaining projection 39, holding means 4,
0: engaging concave portion, 41: engaging convex portion, A: object to be cut.

Claims (1)

[Claims] 1. A main body, a mounting body detachably provided on the main body, and an elevating body connected to the mounting body so as to be elastically elevable.
A cutting tool characterized by comprising a blade body detachably provided on an elevating body and capable of protruding from the main body depending on the elevating body, and an operating body provided on the main body and elevating the elevating body.